Firefighters responded to the second-alarm structure fire at Telegraph Road and Pioneer Boulevard at about 5:30 p.m.
Whittier police and the Santa Fe Springs Fire Department worked to put out the blaze. Both streets were expected to be closed for several hours, Whittier police said.
THIS JUST IN: Firefighters battling 2nd-alarm structure fire at Telegraph Rd, Pioneer Blvd in Santa Fe Springs pic.twitter.com/Ot3z3qGVHl— ABC7 Eyewitness News (@ABC7) March 8, 2016
One man was found dead inside the building, according to Whittier PD. No other injuries were reported.
The cause of the fire was unknown as the investigation was ongoing.